Transmission mechanism and motor stator thereof

Abstract

The application discloses a transmission mechanism and a motor stator thereof. The motor stator comprises a stator coil, a pin and a connector. A skeleton of the stator coil is provided with a pin fixing portion for fixing the pin. An inner section of the pin is inserted into the skeleton to form a coil conductive terminal in conductive connection with a winding outlet end. An outer section of the pin is led out from a pin leading-out surface of the pin fixing portion. A body of the connector is provided with a penetrating hole in communication with a connecting cavity. The outer section of the pin is inserted into the connecting cavity of the connector from the penetrating hole to form a connector conductive terminal. The application can effectively reduce parts and assembly processes, and provides a good technical guarantee for improving production efficiency and saving cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration technology, in particular to a transmission mechanism and motor stator thereof. BACKGROUND

[0002] The electric air door is used in the air duct system of the air-cooled refrigerator, freezer and other equipment with refrigeration requirements. The cold air generated by the fan rotation enters the refrigeration chamber through the air duct system, and the electric air door adjusts the cold air volume or cuts off the cold air flow to prevent too much cold air from entering the refrigeration chamber. Please refer to Figure 16 , which shows a structural schematic diagram of a typical electric air door.

[0003] The motor 01 and the reduction gear set 02 of the electric air door are arranged in the gear box 03, the door plate is connected with the output gear through the rotating shaft, and the motor transmits the torque to the rotating shaft through the reduction gear to drive the door plate to open and close. Among them, the shell of the motor is a stamping part, the upper cover plate is connected with the upper shell body and the lower cover plate is connected with the lower shell body respectively, and then assembled into a whole. The motor rotor shaft 011 is crimped on the lower cover plate 012 of the shell, and the first stage transmission gear shaft 021 of the reduction gear set is crimped on the upper cover plate 013. Please further refer to Figure 17 and Figure 18 , wherein, Figure 17 is Figure 16 the schematic diagram of the motor in Figure 18 is Figure 17 A-A sectional view of. The outgoing line end of the motor, the skeleton pin and the enameled wire need to be welded, the skeleton pin and the PCB board need to be welded directly, the pin terminal and the PCB board 05 need to be welded directly, and the skeleton pin and the pin terminal need to be connected through the PCB board and the fixing frame 04 to realize the electrical connection. Many parts, many welding processes, and complex assembly process. SUMMARY

[0004] To solve the above technical problems, the present application provides a transmission mechanism and motor stator thereof to effectively simplify the parts and structural relationship and improve the assembly process.

[0005] The present application provides a motor stator, comprising a stator coil, a pin and a connector, the skeleton of the stator coil has a pin fixing part for fixing the pin, the inner segment of the pin is inserted into the skeleton to form a coil conductive terminal connected with the winding outgoing line end, and the outer segment of the pin is led out from the pin leading-out surface of the pin fixing part; the body of the connector is provided with a through hole in communication with the connecting cavity, and the outer segment of the pin is inserted into the connecting cavity of the connector from the through hole to form a connector conductive terminal.

[0006] Compared with the background art, one end of the pin is inserted into the framework and connected with the framework, and the outgoing line end of the enameled wire winding is connected with the one end of the pin. The other end of the pin is inserted into the connector and connected with the connector body, so as to realize the electrical connection with the external joint. Compared with the connection mode of adopting the adapter PCB board and the fixing frame, the adapter PCB board and the fixing frame are cancelled, and on this basis, the processes of welding the outgoing line end of the winding with the circuit board and welding the conductive terminal of the connector with the circuit board are omitted. In this way, the number of parts and the assembly processes are reduced, which provides a good technical guarantee for improving the production efficiency and saving the cost. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 The opening state diagram of the electrically operated damper is shown in the specific embodiment.

[0008] Figure 2 The assembly relationship between the door plate and the internal transmission mechanism is shown in the specific embodiment. Figure 1

[0009] Figure 3 The schematic diagram of the transmission mechanism is shown in the specific embodiment.

[0010] Figure 4 The top view of the specific embodiment is shown in the specific embodiment. Figure 3

[0011] Figure 5 The structural schematic diagram of the gear box is shown in the specific embodiment. Figure 1

[0012] Figure 6 The schematic diagram of the motor is shown in the specific embodiment. Figure 1

[0013] The assembly relationship between the motor stator and the gear box is shown in the specific embodiment. Figure 7

[0014] The overall structural schematic diagram of the positioning column is shown in the specific embodiment. Figure 8 Figure 7 The schematic diagram of the motor stator from another angle is shown in the specific embodiment.

[0015] Figure 9 The A-A sectional view of the specific embodiment is shown in the specific embodiment.

[0016] Figure 10 Figure 9 The assembly relationship between the coil support and the pin is shown in the specific embodiment.

[0017] Figure 11 The structural schematic diagram of the connector body before assembly is shown in the specific embodiment.

[0018] Figure 12 The structural schematic diagram of the connector body before assembly is shown in the specific embodiment.

[0019] ​​​​​Figure 13 Fig. 2 is a top view of the connector body shown in Fig. 1 ; Figure 12

[0020] Figure 14 Fig. 3 is a schematic view of the assembly relationship between the pin and the connector before thermal fusion;

[0021] Figure 15 Fig. 4 is a schematic view of the assembly relationship between the pin and the connector after thermal fusion;

[0022] Figure 16 Fig. 5 is a schematic view of the structure of a typical electrically operated damper described in the background art;

[0023] Figure 17 Fig. 6 is a schematic view of the motor shown in Fig. 5; Figure 16

[0024] Figure 18 Fig. 7 is an A-A sectional view of the motor shown in Fig. 6. Figure 17

[0025] Figures 1-15

[0026] Gearbox 10, bottom plate 101, mounting seat 102, mounting shaft hole 1021, positioning column 103, top adapter section 1031, bottom support section 1032, support step 1033, reinforcing rib 1034, portal 20, door plate 30, sealing plate 40, motor 50, rotor shaft 51, rotor 52, stator 53, cover plate 531, mounting portion 5311, mounting hole 5312, recess 5313, housing 532, cover plate mounting surface 5321, convex portion 5322, process opening 5323, connector 54, connector body 541, through hole 542, thermal fusion convex portion 543, first thermal fusion convex portion 543a, second thermal fusion convex portion 543b, pin slot 544, pin mounting slot 545, pin 55, first pin group 55a, second pin group 55b, inner section 551, outer section 552, skeleton 56, upper coil skeleton 56a, lower coil skeleton 56b, pin fixing portion 561, pin lead-out surface 5611, pole plate 57, gear set 60, final stage gear 61, final stage gear shaft 62, gear shaft 63.

[0027] Figures 16-18

[0028] Motor 01, rotor shaft 011, lower cover plate 012, upper cover plate 013, gear set 02, first stage transmission gear shaft 021, gearbox 03, fixing frame 04, PCB board 05. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments. ​​​​​

[0030] Without loss of generality, the embodiment takes a typical electrically operated damper as shown in Figure 1 the description subject, and details the specific implementation structure of its transmission mechanism. It should be understood that other functional components such as the door panel and door frame of the electrically operated damper and their matching relationship are not the core of the application, and do not constitute a substantial limitation on the technical solutions claimed in the application.

[0031] Please refer to Figure 1 , which shows a schematic diagram of the electrically operated damper in the embodiment.

[0032] As shown in the figure, the door frame 20 of the electrically operated damper is arranged on the gear box 10, and the middle part is formed with an air duct matched with the door panel 30. The door panel 30 is hinged to one side of the door frame 20 and can rotate under the drive of the transmission mechanism in the gear box 10 to control the air duct to be in Figure 1 the open state as shown in the figure, or switched to the closed state. In the closed state, a reliable seal can be formed by the sealing plate 40 on the door panel 30 matched with the door frame 20.

[0033] Please refer to Figures 2-4 , wherein Figure 2 is Figure 1 the assembly relationship diagram of the door panel and the internal transmission mechanism, Figure 3 is a schematic diagram of the transmission mechanism in the specific embodiment, Figure 4 is Figure 3 a top view.

[0034] The transmission mechanism arranged in the gear box 10 mainly includes a motor 50 and a gear set 60, wherein the rotor shaft 51 of the motor 50 is fixedly provided with an output gear (not shown in the figure), the first gear (not shown in the figure) of the gear set 60 is engaged with the output gear on the motor rotor shaft 51, and the last gear 61 is used for transmission connection with the damper door panel 30, and power transmission is performed through speed reduction and torque increase of the gear set 60. Here, "first stage" and "last stage" are defined based on the power transmission path of the gear set 60, that is, the first stage gear is in transmission connection with the output power of the motor 50, and the last stage gear is the final output driving force.

[0035] The stator 53 of the motor 50 is electrically connected with the connector 54 through the pin, and the corresponding coil is turned on based on the control instruction, and the rotor 52 is inducted and rotated accordingly. The rotor shaft 51 which synchronously acts with the rotor 52 outputs power to the gear set 60 through the output gear arranged thereon, and drives the door panel 30 to rotate through the last gear shaft 62 of the gear set 60, so as to realize the opening or closing operation.

[0036] In the scheme, the rotor shaft 51 of the motor 50 and each gear shaft 63 of the gear set 60 are arranged on the bottom plate 101 of the gear box 10. In this way, the spacing between the shafts of the transmission mechanism is defined by the corresponding shaft mounting positions on the bottom plate 101 of the gear box 10. Please refer to Figure 5 Fig. 2 is a schematic view of the structure of the gear box, showing the arrangement of the shafts on the bottom plate 101.

[0037] That is, the spacing between the shafts is related to the size between the shaft mounting positions on the gear box 10, and there is no other tolerance accumulation between the two shafts having a transmission relationship, so that the accuracy of the spacing between the shafts can be ensured, and the problem of abnormal sound of the damper during operation caused by tolerance accumulation can be avoided. In addition, since there is no tolerance accumulation in the size chain for controlling the spacing between the shafts, the tolerance requirements of the corresponding rotating shafts and related gears can be appropriately reduced, and on the basis of reasonable control of abnormal sound during operation, the processing cost can be effectively controlled.

[0038] It can be understood that three gear shafts 63 of the gear set 60 are shown in the figure. Of course, for different reduction ratios, multiple stages of reduction can be used according to the needs of functional setting, and are not limited to the number of gear shafts shown in the figure.

[0039] In addition, the rotor shaft 51 and each gear shaft 63 arranged on the bottom plate 101 of the gear box 10 can have different assembly structures. For example, but not limited to, the bottom plate 101 has mounting shaft holes 1021 corresponding to the arrangement of the rotor shaft 51 and each gear shaft 63, as long as the corresponding shaft positions can be accurately defined.

[0040] In the scheme, in order to obtain better assembly reliability, the mounting seat 102 fixedly arranged on the surface of the bottom plate 101 can form the corresponding mounting shaft hole 1021, which can increase the positioning contact surface between the shaft and the shaft hole without changing the thickness of the bottom plate 101, so as to ensure the stable and reliable assembly of the shafts, and further accurately define the corresponding shaft positions.

[0041] Here, the mounting seat 102 can be integrally formed with the bottom plate 101 of the gear box 10, or can be separately processed and fixed by welding process.

[0042] As a preferred embodiment, the output gear on the motor rotor shaft 21 is located below the rotor 52 of the motor 50. In the axial direction, the output gear is close to the bottom plate 101 of the gear box 10, so that the load acting on the lower end of the rotor shaft 51 of the rotor 52 is relatively small, and the possibility of running deflection can be maximally avoided, and abnormal sound during operation can be avoided. Here, the orientation words "axial direction" and "radial direction" in the following are defined based on the motor stator and rotor.

[0043] According to the scheme, the rotor 52 and the stator 53 of the motor 50 can be respectively installed on the gear box 10. Specifically, an axial plug-in positioning pair is arranged between the bottom plate 101 of the gear box 10 and the stator 53 of the motor 50. When the stator 53 is assembled on the bottom plate 101 in the axial direction, the installation position of the stator 53 can be defined by the axial plug-in positioning pair therebetween, thereby ensuring the assembly accuracy of the rotor 52 and the stator 53. Please also refer to Figure 6 and Figure 7 wherein, Figure 6 is a schematic view of a motor, Figure 7 is a schematic view of the assembly relationship between the motor stator and the gear box.

[0044] The axial plug-in positioning pair preferably adopts a matched column hole structure. One of the bottom plate 101 and the stator 53 is provided with a mounting hole, and the other is provided with a positioning column, thereby constructing the axial plug-in positioning pair. The structure is simple, the plug-in can be quickly completed, and the maintenance is easy, which has good operability.

[0045] In the scheme, the positioning column 103 is arranged on the bottom plate 101, and correspondingly, the mounting hole 5312 is arranged on the stator 53. During assembly, the mounting hole 5312 on the stator 53 is centered with the positioning column 103 on the bottom plate 101, that is, the plug-in positioning is completed; at the same time, the rotor 52 is positioned on the bottom plate 101 through the rotor shaft 51, so that the stator part center hole and the rotor part are kept concentric. Of course, in order to ensure the concentricity of the stator and the rotor, the mounting hole 5312 can be punched after the motor is assembled.

[0046] As a preferred, the axial plug-in positioning pair in the scheme is provided as two circumferentially spaced ones. It should be understood that the plug-in positioning pair can also be provided as other multiple ones, as long as the installation and positioning requirements of the stator 53 are met.

[0047] Generally, the motor 50 needs high running stability, and the matched mounting hole 5312 on the stator 53 and the positioning column 103 on the bottom plate 101 can be further optimized to ensure the reliable assembly relationship under the rotational inertia. As shown in Figure 6 and Figure 7 The housing of the stator 53 is provided with an installation part 5311 extending radially outward, and the mounting hole 5312 matched with the positioning column 103 is arranged on the installation part 5311; here, the installation part 5311 extends radially and extends to the outside of the housing body, which can effectively utilize the internal space of the gear box to control the height size.

[0048] Correspondingly, the positioning column 103 on the bottom plate 101 of the gear box 10 comprises two parts: a top adapting section 1031 and a bottom bearing section 1032, wherein the top adapting section 1031 is adapted to the mounting hole 5312 on the mounting part 5311, and a radial limiting relationship is formed; and a bearing step 1033 is formed between the top adapting section 1031 and the bottom bearing section 1032, and the mounting part 5311 is arranged on the bearing step 1033, thereby forming an axial limiting relationship, that is, the mounting part 5311 is abutted on the bearing step 1033 after assembly, so as to facilitate control of assembly precision and have good assembly process.

[0049] In addition, the body of the bottom bearing section 1032 has a reinforcing rib 1034 extending radially outward, so as to obtain good bearing capacity. Of course, the number of the reinforcing rib 1034 can be set according to actual needs, for example, but not limited to, three as shown in the figure.

[0050] In the scheme, the shell of the stator 53 is assembled by two parts of the shell 532 and the cover plate 531. Please see Figure 9 , which shows the overall assembly relationship of the motor stator 53 from another angle. Specifically, the cover plate 531 is fixedly connected with the open end of the shell 532, so as to form a space for accommodating the stator coil. Here, the specific structure of the stator coil is not the core of the application, and thus will not be described herein.

[0051] As shown in the figure, the open end of the shell 532 has a cover plate mounting surface 5321 and a convex part 5322, and correspondingly, the mounting part 5311 extends radially outward from the plate body of the cover plate 531. The outer periphery of the plate body of the cover plate 531 is radially fitted along the inner wall of the shell 532, so as to form relative sealing at the assembly adapting position. The mounting part 5311 is axially abutted on the cover plate mounting surface 5321 of the open end of the shell 532, and at the same time, the convex part 5322 on the body of the shell 532 is bent inward by external force, so as to press and fix the plate body of the cover plate 531. Thus, the assembly and fixation of the cover plate 531 and the shell 532 are completed.

[0052] The mounting part 5311 has dual functions of stator overall mounting and positioning and axial assembly positioning between the cover plate 531 and the shell 532 in the scheme. In this way, the welding fixation mode of the splicing seam between the upper and lower motor shells of the motor using argon arc welding and laser welding is replaced, so as to improve production efficiency and save energy. In addition, the motor assembly is more convenient and easier to realize automation.

[0053] Preferably, each mounting part 5311 is provided with two protrusions 5322, which are respectively provided on both sides of the cover mounting surface 5321 that is adapted to the mounting part 5311. As the integral mounting part of the stator, the mounting part 5311 is fixed by pressing the bent protrusions 5322 on both sides to ensure reliable fixation between it and the base plate 101 of the gearbox 10.

[0054] The protrusion 5322 can have different shapes and structures, as long as it can press and fix the cover plate 531, it is within the scope of protection claimed in this application. In addition, the protrusion 5322 can be formed by different processing methods. In this solution, the protrusion 5322 is formed by the process opening 5323 on the side of the cover plate mounting surface 5321, as shown in the figure. The process opening 5323 is located between the protrusion 5322 and the housing 532 body on the side of the cover plate mounting surface 5321.

[0055] Similarly, the process opening 5323 can also take different shapes, such as, but not limited to, the “V” shaped opening shown in the preferred example in the figure.

[0056] To facilitate the bending operation of the protrusion 5322, a recess 5313 can be provided on the outer periphery of the cover plate 531 to avoid interference between the protrusion 5322 and the cover plate 531 during the bending process. Figure 9 As shown, the recess 5313 is formed radially inward and is specifically located on the outer periphery of the plate adjacent to the mounting portion 5311. This avoids or prevents deformation caused by the bending of the protrusion 5322 during heat fusion, thereby avoiding the influence of the pressing force applied to the cover plate 531 on the mounting portion 5311 and ensuring that it maintains the assembly accuracy with the positioning post 103.

[0057] Preferably, the recess is concave and arc-shaped to avoid stress concentration.

[0058] Furthermore, the connection structure between the pins and the connector can be further optimized to reduce the number of parts and assembly steps. Please see [link / reference]. Figure 10 , Figure 11 , Figure 12 and Figure 13 ,in, Figure 10 for Figure 9 AA section view, Figure 11 The assembly relationship between the coil support and the pins is shown. Figure 12 This is a schematic diagram of the connector body before assembly. Figure 13 for Figure 12 The top view of the connector body shown.

[0059] In the scheme, the motor stator comprises a stator coil, a pin 55 and a connector 54, wherein the stator coil is wound with an enameled wire winding on a framework 56, and the upper and lower frameworks 56 have corresponding pole plates 57 therebetween. It can be understood that the winding mechanism of the enameled wire on the stator coil is not the core of the application, and thus will not be described herein.

[0060] Specifically, the framework 56 has a pin fixing portion 561 for fixing the corresponding pin 55, and the pin fixing portion 561 is connected to the framework 56 by means of Figure 11 As shown, the inner segment 551 of the pin 55 is inserted into the framework 56 to form a coil conductive terminal in conductive connection with the wire outlet end, and the outer segment 552 of the pin 55 is inserted out of the pin leading-out surface 5611 of the pin fixing portion 561 to be directly connected with the connector 54; Figure 11 As shown, the outer segment 552 is in an unbent state. In combination with Figure 12 and Figure 13 As shown, the connector body 541 is provided with a through hole 542 in communication with the connecting cavity, and the outer segment 552 of the pin 55 is inserted into the connecting cavity of the connector 54 through the through hole 542 to form a connector conductive terminal. It can be understood that the "inner segment" and "outer segment" of the pin 55 are defined by the stator as the description subject, that is, the one end body of the pin 55 inserted into the framework 56 is the "inner segment", and the other end body away from the framework 56 is the "outer segment".

[0061] In the scheme, one end of the pin 55 is inserted into the framework 56 and connected with the framework 56, and the wire outlet end of the enameled wire winding is connected with the one end of the pin, which can be connected conductively by means of soldering. The other end of the pin 55 is inserted into the connector 54 and connected with the connector body 541, and here, the part of the pin 55 inserted into the connecting cavity of the connector 54 constitutes a conductive terminal of the connector 54 to realize electrical connection with an external connector.

[0062] Compared with the connection mode of using a relay PCB board and a fixing frame, the scheme cancels the relay PCB board and the fixing frame, and on this basis, the processes of soldering the winding outlet end with the circuit board and soldering the connector conductive terminal with the circuit board are omitted. In this way, the number of parts and assembly processes is reduced, which provides a good technical guarantee for improving production efficiency and saving cost.

[0063] In order to better improve the connection reliability between the pin and the connector body, as a preferred, a hot melt protrusion 543 is arranged on the outer surface of the connector body 541, the hot melt protrusion 543 has a pin groove 544 arranged in the same direction as the body of the pin 55, the body of the pin 55 is clamped in the pin groove 544, and the hot melt protrusion 543 can be hot melt cured to cover the corresponding position of the pin 55, so as to reliably fix the corresponding pin 55 to the connector body 541, and prevent the pin 55 from being separated from the connector body 541 during the plugging operation of the connector 54. Please see Figure 14 andFigure 15 wherein, Figure 14 is a schematic diagram of the assembly relationship between the pin and the connector before hot melting, Figure 15 is a schematic diagram of the assembly relationship between the pin and the connector after hot melting.

[0064] It should be noted that the hot melting protrusion can be arranged at different positions on the connector body 541 according to different product types and specific assembly orientation relationships. For example, but not limited to, the preferred arrangement scheme shown in the figure, the hot melting protrusion 543 is arranged at the bottom surface of the connector body 541, which is beneficial to the overall layout of the gear box and can reduce the space occupation.

[0065] At the bottom surface of the connector body 541 corresponding to the position of the hot melting protrusion 543, a pin mounting groove 545 is arranged, which is in communication with the through hole 542. The groove direction of the pin mounting groove 545 is perpendicular to the opening direction of the through hole 542. Correspondingly, the body part of the connector conductive terminal is formed by bending the head of the outer section 552 of the pin 55. That is, the body of the pin 55 is embedded in the connector body 541 to form a basic positioning, and then the pin 55 is fixed on the bottom surface of the connector body 541 after the hot melting and solidification of the hot melting protrusion 543.

[0066] In order to obtain good hot melting process, two hot melting protrusions 543 are arranged along the body length direction of the pin 55: a first hot melting protrusion 543a and a second hot melting protrusion 543b. The first hot melting protrusion 543a is arranged at the edge of the bottom surface of the connector body 541 close to the stator coil, and the second hot melting protrusion 543b is arranged at the position where the pin mounting groove 545 and the through hole 542 are in communication on the bottom surface of the connector body 541.

[0067] Overall, the scheme provides two hot melting fixing points for the pins 55 arranged at both ends of the pin mounting groove 545. Of course, according to different product design requirements, for example, a large size connector, other multiple hot melting protrusions 543 (not shown in the figure) can be arranged along the body length direction of the pin 55.

[0068] Specifically, the first hot melting protrusion 543a includes two strip-shaped bodies on both sides of the pin groove 544, which is simple in structure and can be quickly hot melted and solidified. The second hot melting protrusion 543b is a "U" shaped bending shape arranged around the end of the pin mounting groove 545, which forms a good cladding and fixing for the pin 55 at the position where the pin mounting groove 545 and the through hole 542 are in communication.

[0069] In the scheme, for the upper coil former 56a and the lower coil former 56b of the motor stator, the pins are divided into the first pin group 55a connected with the upper coil former and the second pin group 55b connected with the lower coil former; the first pin group 55a passing through the pin leading-out surface 5611 of the upper coil former 56a and the second pin group 55b passing through the pin leading-out surface 5611 of the lower coil former 56b are arranged in the same plane in turn and at intervals. Here, the pins are arranged at intervals to make full use of the height dimension space, and the extension of the plurality of pins 55 in the same plane is conducive to the design of the adapter structure of the connector body 541.

[0070] It should be noted that the above embodiments provided by the embodiment of the present application are other functional configurations of the transmission mechanism, which are not the core of the present application. Therefore, the above embodiments will not be described herein. In addition, the number of teeth of each tooth portion of the transmission mechanism is only exemplary in the drawings. It should be understood that as long as the technical means consistent with the core idea of the present scheme are adopted, they are within the scope of the present application.

[0071] The above is only the preferred embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. An electric machine stator for placement within a gear box of a transmission mechanism, characterized by, The stator coil, pin and the mounting gear box connector, the stator coil skeleton has a pin fixed part for fixing the pin, the inner section of the pin is inserted into the skeleton, forming a coil conductive terminal connected with the winding outlet end, the outer section of the pin is inserted into the connecting cavity of the connector from the pin leading-out surface of the pin fixed part; the body of the connector is provided with a through hole communicating with the connecting cavity of the connector, the outer section of the pin is inserted into the connecting cavity of the connector from the through hole, forming a connector conductive terminal. The shell of the stator includes a housing and a cover plate, the cover plate is fixedly connected with the open end of the housing to form a space for accommodating the stator coil; the open end of the housing has a cover plate mounting surface and a convex part, the outer periphery of the plate body of the cover plate is radially fitted along the inner wall of the housing, and the convex part is bent inward to press and fix the plate body of the cover plate; the mounting part is formed by extending radially outward from the plate body of the cover plate, the mounting part axially abuts with the cover plate mounting surface, and is used to form an axial plug-in positioning pair with the bottom plate of the gear box. The outer surface of the body of the connector is provided with a hot melt convex part, the hot melt convex part has a pin slot arranged in the same direction as the body of the pin, and the hot melt convex part can be hot melt cured to cover the pin at the corresponding position to fix the pin to the body of the connector; the hot melt convex part is arranged on the bottom surface of the body of the connector, and the bottom surface of the body at the corresponding position is provided with a pin mounting slot communicating with the through hole; the slotting direction of the pin mounting slot is perpendicular to the opening direction of the through hole, and the connector conductive terminal is formed by bending the head part of the outer section of the pin.

2. The motor stator of claim 1, wherein, At least two hot melt convex parts are arranged along the length direction of the body of the pin.

3. The motor stator of claim 2, wherein, A first hot melt convex part and a second hot melt convex part are arranged along the length direction of the body of the pin; the first hot melt convex part is arranged at the edge of the bottom surface of the body of the connector close to the side of the stator coil, and the second hot melt convex part is arranged at the position where the pin mounting slot on the bottom surface of the body of the connector communicates with the through hole.

4. The motor stator of claim 3, wherein, The first hot melt convex part includes two strip bodies located on both sides of the pin slot, and the second hot melt convex part is a "U" shaped bending shape arranged around the end of the pin mounting slot.

5. The motor stator of any one of claims 1 to 4, wherein, The pin is divided into a first pin group connected with the upper coil skeleton and a second pin group connected with the lower coil skeleton; the first pin group and the second pin group are arranged in the same plane in sequence and at intervals from the pin leading-out surface of the upper coil skeleton and the lower coil skeleton.

6. A transmission mechanism, characterized by, The motor and gear set arranged in the gear box, the motor adopts the motor stator according to any one of claims 1 to 5, the output gear is fixedly arranged on the rotor shaft of the motor, the first gear of the gear set is engaged with the output gear, and the last gear of the gear set is used for transmission connection with the door plate of the damper; the axial plug-in positioning pair is arranged between the bottom plate of the gear box and the stator of the motor, and the positioning column of the axial plug-in positioning pair is arranged on the bottom plate.

7. The transmission mechanism of claim 6, wherein The rotor shaft and each gear shaft of the gear set are arranged on the bottom plate of the gear box.

8. The transmission mechanism of claim 7, wherein The output gear is located below the rotor of the motor, and the mounting portion of the motor stator is provided with a mounting hole matched with the positioning column.

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